Abstract
X-ray reflectometry is very useful technique for in situ nanostructure analysis of surfaces and interfaces with very high accuracy. Its principle and application to monolayer of ionic amphiphilic diblock copolymer at the air/water interface are described. Especially, information on the nanostructure and its transition of polyelectrolyte brush under the water could be quantitatively obtained. As a result, the differences of brush formation mechanism and response to added salt were clarified.
